ATEX and IECEx certification for hazardous-area motor starting
The 3RW5516-1HA05 carries both ATEX and IECEx certification, allowing installation in Zone 1/21 or Zone 2/22 classified areas without an external isolation barrier — common in chemical, oil/gas, and grain-handling facilities. This eliminates the cost and panel space of separate safety barriers for the starter circuit, provided the downstream motor is also ATEX-rated and the cable gland entry meets the zone requirements.
Trip class selection — matching start profile to motor load
Trip class is configurable as CLASS 10A, 10E (default), 20E, or 30E per IEC 60947-4-2, giving the integrator control over thermal overload response during starting — CLASS 10A for high-inertia loads like centrifuges, CLASS 20E/30E for conveyors or crushers with long acceleration times. The default CLASS 10E suits most pump and fan starts; switching to CLASS 30E extends the allowable start time to 30 seconds at locked-rotor current without nuisance tripping.
Voltage range and fieldbus — 200-600 V with Modbus TCP
Rated 200-600 V AC, the unit covers 208 V North American, 400 V European, and 575 V Canadian industrial supplies from a single SKU — no voltage tap changes needed during commissioning. Modbus TCP onboard means the soft starter connects directly to the plant Ethernet network without a gateway module, reducing BOM cost and cabinet wiring. PROFIBUS is also supported natively, giving flexibility for legacy brownfield installations that still run DP networks.
Panel cutout and clearance — retrofit dimensions
At 152 mm deep, 170 mm wide, and 275 mm tall, the 3RW5516-1HA05 fits standard 400 mm deep enclosures with room for the top-entry cables. Clearance requirements: 100 mm above, 10 mm in front, 75 mm below, 5 mm at the sides, and zero behind — this means the unit can be mounted flush against the back panel, freeing space for other components. Solid cable terminals accept 1.0-2.5 mm² and 2.5-10 mm² conductors, covering both control wiring and power feed without adapter lugs.
Lifecycle and compliance — active production, global approvals
CE marking, UL approval, and CSA approval are all listed, covering installations in Europe, the US, and Canada without separate certification runs.